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1. 发明授权

US10386485B2 Laser scanner 有权
公开(公告)号：US10386485B2
公开(公告)日：2019-08-20
申请号：US15358359
申请日：2016-11-22
申请人： TOPCON Corporation
发明人： Satoshi Yanobe
IPC分类号： G01C3/08 , G01S17/10 , G01S17/42 , G01S7/487
摘要： The invention provides a laser scanner, which comprises a light projecting unit for irradiating a distance measuring light, a light receiving unit for receiving a reflected distance measuring light, a distance measuring unit for performing a distance measurement based on a light receiving signal, a rotary deflecting unit for performing a rotary irradiation of the distance measuring light, and an arithmetic control unit, wherein the arithmetic control unit has a light receiving intensity judging component and a threshold value setting component, a light receiving intensity which is obtained by scanning the distance measuring light is inputted in advance to the threshold value setting component from the light receiving intensity judging component, the threshold value setting component sets a threshold value for detecting light receiving corresponding to the light receiving intensity, and the arithmetic control unit acquires a light receiving signal based on the threshold value and performs a distance measurement.

2. 发明申请

US20170108334A1 Measuring Device 审中-公开
公开(公告)号：US20170108334A1
公开(公告)日：2017-04-20
申请号：US15296328
申请日：2016-10-18
申请人： TOPCON Corporation
发明人： Masaki Kamiki , Goro Iwasaki , Shinji Yamaguchi , Satoshi Yanobe , Eiji Takeuchi , Yosuke Okudaira
IPC分类号： G01C9/20 , G01C9/06
CPC分类号： G01C9/20 , G01C9/06 , G01C15/008 , G01C2009/066
摘要： The present invention provides a measuring device, which comprises a leveling unit, a measuring device main body provided on the leveling unit, a control unit, a first tilt angle measuring device for detecting a horizontality with high accuracy, and a second tilt angle measuring device for detecting a tilt angle in a wider range than a range of the first tilt angle measuring device and having a higher responsiveness than a responsiveness of the first tilt angle measuring device, wherein the control unit, the first tilt angle measuring device and the second tilt angle measuring device are provided in the measuring device main body and wherein the control unit drives the leveling unit based on a detection result of the second tilt angle measuring device, performs a rough leveling until a tilt angle detected by the second tilt angle measuring device reaches within a range in which the first tilt angle measuring device is capable of detecting and levels the measuring device main body horizontally based on a detection result of the first tilt angle measuring device.

3. 发明授权

US10724860B2 Surveying device and survey system 有权
公开(公告)号：US10724860B2
公开(公告)日：2020-07-28
申请号：US15890635
申请日：2018-02-07
申请人： Topcon Corporation
发明人： Nobuyuki Nishita , Jumpei Kochi , Satoshi Yanobe
IPC分类号： G01C11/02 , H04N5/225 , G06T7/73 , B64D47/08 , B64C39/02 , G01C15/00
摘要： When a camera and a surveying device are connected by a synchro cable, and a photographing condition obtaining unit obtains a photographing start time of the camera, a survey control unit makes a survey time measurement unit start time measurement. After the camera and the surveying device are disconnected, the survey control unit starts a survey by a predetermined surveying period ΔT when tracking of the prism starts. Based on the time measurement by the survey time measurement unit, the survey control unit associates the survey result with the photographing position of each image taken by the camera to generate the data for photogrammetry.

4. 发明授权

US10712153B2 Method for controlling ultrasonic motor and surveying instrument for the same 有权
公开(公告)号：US10712153B2
公开(公告)日：2020-07-14
申请号：US15477691
申请日：2017-04-03
申请人： TOPCON CORPORATION
发明人： Kaoru Kumagai , Satoshi Yanobe , Tetsutaro Kouji
IPC分类号： G01C15/00 , H02N2/14 , G01C15/02 , G05B7/00 , H02N2/00 , H02N2/16
摘要： Provided is a method for controlling an ultrasonic motor to reduce deterioration of automatic tracking performance, and a surveying instrument for the same. The present invention provides a method for controlling an ultrasonic motor in a surveying instrument including a rotary shaft, an ultrasonic motor that drives a rotary shaft, a tracking unit that includes a light emitting unit and a light receiving unit and tracks a target, and a clock signal oscillation unit that outputs a clock signal, wherein at the time of low-speed rotation of the ultrasonic motor, based on the clock signal, a ratio of an acceleration period in which a drive signal is applied and a deceleration period in which the drive signal is stopped in a drive cycle of the drive signal of the ultrasonic motor is set, and the light emitting unit is made to emit light in the deceleration period.

5. 发明授权

US10564265B2 Measurement device and measurement method 有权
公开(公告)号：US10564265B2
公开(公告)日：2020-02-18
申请号：US15713841
申请日：2017-09-25
申请人： Topcon Corporation
发明人： Takahiro Inoue , Satoshi Yanobe , Hideyuki Matsumoto , Fumio Ohtomo
IPC分类号： G01S7/481 , G01S17/02 , G01C3/08 , G01S17/89 , G01B21/22 , G01C15/00 , G01C1/04 , G01B21/04
摘要： A measurement device and measurement method are provided which are capable of measuring the inclination of a measurement target object surface both with a simple configuration and at high speed. The measurement device includes: a rangefinding light emitting section; a rangefinding unit configured to receive reflected rangefinding light; an optical axis deflection section provided on an optical path common to rangefinding light and reflected rangefinding light, and configured to deflect optical axes thereof; a motor configured to cause the optical axis deflection section to rotate; an emission direction detection unit configured to detect a deflection angle and deflection direction resulting from the optical axis deflection section; and a computation controller that measures the inclination of a measurement target object surface with respect to the emission optical axis on the basis of acquired coordinate data on the measurement target object surface.

6. 发明授权

US10211387B2 Method for controlling ultrasonic motor and surveying instrument for the same 有权
公开(公告)号：US10211387B2
公开(公告)日：2019-02-19
申请号：US15463920
申请日：2017-03-20
申请人： TOPCON CORPORATION
发明人： Kaoru Kumagai , Satoshi Yanobe , Tetsutaro Kouji
IPC分类号： H02P23/20 , H01L41/04 , B06B1/06 , G01C3/08 , G01D5/347 , G01S3/786 , H01L41/09 , G01C15/00 , H02N2/14 , H02N2/16
摘要： Provided is a method for controlling an ultrasonic motor to reduce noise sounding during low-speed rotation in a surveying instrument adopting the ultrasonic motor for a rotary shaft, and a surveying instrument for the same. In a method for controlling an ultrasonic motor according to an aspect of the present invention, in a low-speed rotation range of an ultrasonic motor, a ratio of an acceleration period as a time of application of the drive signal in a control cycle is controlled, and a time to start the acceleration period is randomly shifted for each control cycle. In a method for controlling an ultrasonic motor according to another aspect, a time to start the acceleration period is regularly shifted for each control cycle. In a method for controlling an ultrasonic motor according to still another aspect, second-half acceleration control and first-half acceleration control are alternately repeated.

7. 发明授权

US09979324B2 Method for controlling ultrasonic motor and surveying instrument for the same 有权
公开(公告)号：US09979324B2
公开(公告)日：2018-05-22
申请号：US15490457
申请日：2017-04-18
申请人： TOPCON CORPORATION
发明人： Kaoru Kumagai , Satoshi Yanobe
IPC分类号： H01L41/04 , H02N2/14 , G01C15/00
CPC分类号： H02N2/142 , G01C15/002 , H02N2/163
摘要： Provided is a method for controlling an ultrasonic motor provided at a rotary shaft of a surveying instrument to meet requirements for a rotation speed and a plurality of operation modes, and a surveying instrument for the same. In the present invention, the ultrasonic motor is controlled by a first signal having a square wave in a range of rotation speed of the rotary shaft from zero to a first speed, controlled by a second signal in which rises or falls of the square wave are sloped in a range from the first speed to a second speed, controlled by a third signal in which rises and falls of the square wave are sloped in a range from the second speed to a third speed, and controlled by a fourth signal in which the drive signal is continuously applied in a range higher than the third speed.

8. 发明申请

US20220317149A1 REVERSING ACTUATION TYPE INERTIA DETECTING DEVICE AND SURVEYING INSTRUMENT 有权
公开(公告)号：US20220317149A1
公开(公告)日：2022-10-06
申请号：US17704157
申请日：2022-03-25
申请人： TOPCON CORPORATION
发明人： Fumio Ohtomo , Satoshi Yanobe , Kaoru Kumagai , Naoki Shoji
IPC分类号： G01P15/18 , G01P15/093 , G01P15/08
摘要： An inner frame is rotatably supported by the outer frame via a first shaft, the inertia detecting unit is rotatably supported by the inner frame via a second shaft orthogonal to the first shaft, a first encoder for detecting a rotation angle between the outer frame and the inner frame, a second encoder for detecting a rotation angle between the inner frame and the inertia detecting unit, and rotation powers are provided on the respective shafts. And the arithmetic processing module is configured to drive the respective rotation powers to make the inertia detecting unit to perform a reversal operation of 180° or one rotation at least once based on outputs from the respective encoders regarding the first shaft and the second shaft and to detect a tilt and a rotation based on detection signals output from the inertia detecting unit before and after the reversal.

9. 发明授权

US11293786B2 Rotary encoder 有权
公开(公告)号：US11293786B2
公开(公告)日：2022-04-05
申请号：US16567466
申请日：2019-09-11
申请人： TOPCON CORPORATION
发明人： Satoshi Yanobe
IPC分类号： G01D5/26 , G01D5/244 , G01D18/00
摘要： A rotary encoder includes: a rotary disk with an angle code; a light source; a detector reading the angle code; and a processing unit acquiring a reading value. The light source includes at least two light-emitting elements spaced from each other. Every time the rotary disk is rotated by a predetermined angle, where an arbitrary angle from a rotation angle θ within a reading range on the detector is provided as φ, the processing unit acquires reading values fI(θ+φ) and fI(θ) with a first light-emitting element and a reading value fII(θ+φ) with a second light-emitting element, to calculate a reading value error due to deflection at an angle θ+φ based on the difference between the reading values fII(θ+φ) and fI(θ+φ), to obtain a difference gI(θ,φ) between the reading values fI(θ+φ) and fI(θ) such that the error is reflected, and to self-calibrate based on a change in the difference gI(θ,φ).

10. 发明授权

US10323940B2 Tilt angle measuring device 有权
公开(公告)号：US10323940B2
公开(公告)日：2019-06-18
申请号：US15296317
申请日：2016-10-18
申请人： TOPCON Corporation
发明人： Masaki Kamiki , Goro Iwasaki , Shinji Yamaguchi , Satoshi Yanobe , Eiji Takeuchi , Yosuke Okudaira
IPC分类号： G01C9/20 , G01C9/06
摘要： The invention provides a tilt angle measuring device, which comprises a discoid container for including a liquid forming a free liquid surface, a light emitting source for allowing a detection light to enter the free liquid surface, a photodetector for receiving the detection light reflected on the free liquid surface and a signal processing unit for detecting a tilt of the free liquid surface based on a detection signal from the photodetector, wherein the signal processing unit sets a detection light storage time of the photodetector so that an error incidence rate of the detection signal is a predetermined value.

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